Hi...Apologies for the late reply. ..been getting the tracking done and told the bolts are seized so I now need track rods and ends....so I quick trip to get tracking done has become an expensive one....only decided to get tracking done due to inner wear on both front tyres.....anyway back to the exhaust. ....the slight leak is from the flange not from inside the silencer box...as you knock it the flange rattles.